It is possible to study abroad during the 4th year (S1 or S2) and the 5th year (S1 only) for one semester.
There are two types of agreeement : The Erasmus+ agreement with the Europe, and the Bilateral agreements for all other destinations.
This stay is an integral part of the individual training project.
An academic exchange is built almost a year before departure.
In order to not forget anything, you can consult here the FAQ on the INSA Lyon website.